.dd_header{
    width: 959px;
    height: 40px;
    background-color: rgb(255, 94, 0);
    border: 1px solid rgb(255, 60, 0);
    margin-left: 12px;
}

.dd_items>li{
    display: inline-block;
    width: 56px;
    height: 40px;
    text-align:center;
}

.dd_items>li>a{
    width: 56px;
    height: 40px;
    line-height: 40px;
    text-align:center;
    color: white;
}